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Monteiro Fernandes, A.B. (author), Brabandt, Joerg (author), Posdziech, Oliver (author), Saadabadi, S.A. (author), Recalde Moreno Del Rocio, M.D.R. (author), Fan, L. (author), Promes, E.J.O. (author), Liu, M. (author), Woudstra, T. (author), Aravind, P.V. (author)This paper describes the steps involved in the design, construction, and testing of a gasifier-specific solid oxide fuel cell (SOFC) system. The design choices are based on reported thermodynamic simulation results for the entire gasifier- gas cleanup-SOFC system. The constructed SOFC system is tested and the measured parameters are compared...journal article 2018
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Aravind, M.A. (author), Saikumar, N. (author), Dinesh, N. S. (author), Rajanna, K. (author)Experience mapping based predictive controller (EMPC) is a recently developed controller based on the concepts of Human Motor Control. It has been demonstrated to out-perform other classical controllers like proportional-derivative (PD), model reference based adaptive controller (MRAC), linear quadratic regulator (LQR) and the linear...journal article 2018
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Tabish, A.N. (author), Patel, H.C. (author), Schoonman, J. (author), Aravind, P.V. (author)Using the Nernst-Planck-Poisson model and a detailed reaction mechanism, we studied the hydrogen electrochemical oxidation on a ceria anode. Resistances caused by surface kinetics, and bulk transport of oxide-ion vacancies and electrons are computed individually to identify the dominant resistive process. The effect of operating conditions...journal article 2018
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Cavalli, A. (author), Kunze, M. (author), Aravind, P.V. (author)Integrated Biomass Gasifier Solid Oxide Fuel Cell Systems represent an alternative to fossil fuel based power plants, and direct internal tar reforming allows achieving high efficiency and decreasing system complexity. However, at present, tar is removed or reformed externally since there is not yet general agreement on the fate of these...journal article 2018
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Botta, G. (author), Mor, R.K. (author), Patel, H.C. (author), Aravind, P.V. (author)Bi-directional solid oxide cell systems (Bi-SOC) are being increasingly considered as an electrical energy storage method and consequently as a means to boost the penetration of renewable energy (RE) and to improve the grid flexibility by power-to-gas electrochemical conversion. A major advantage of these systems is that the same SOC stack...journal article 2018
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Tabish, A.N. (author), Patel, H.C. (author), Aravind, P.V. (author)Fuel flexibility of solid oxide fuel cells enables the use of low cost and practical fuels like syngas. Understanding of the oxidation kinetics with syngas is essential for proper selection of anode material and its design optimization. Using nickel and ceria pattern anodes, we study the electrochemical oxidation of syngas in both dry and wet...journal article 2017
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- Cavalli, A. (author), Kunze, M. (author), Aravind, P.V. (author) conference paper 2017
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Götz, Thomas (author), Saurat, Mathieu (author), Tholen, Lena (author), Adisorn, Thomas (author), Obernberger, Ingwald (author), Brunner, Thomas (author), Kerschbaum, Michael (author), Aravind, P.V. (author), Makkus, Robert (author), Megel, Stefan (author), Hauth, Martin (author), Zappa, William (author)Contemporary combined heat and power (CHP) systems are often based on fossil fuels, such as natural gas or heating oil. Thereby, small-scale cogeneration systems are intended to replace or complement traditional heating equipment in residential buildings. In addition to space heating or domestic hot water supply, electricity is generated for the...conference paper 2017
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Mitchell-Williams, T.B. (author), Tomov, R.I. (author), Saadabadi, S.A. (author), Krauz, M. (author), Aravind, P.V. (author), Glowacki, B.A. (author), Kumar, R.V. (author)Commercially available anode supported solid oxide fuel cells (NiO-8YSZ/8YSZ/LSCF- 20 mm in diameter) were anode infiltrated with gadolinium doped ceria (CGO) using a scalable drop-on-demand inkjet printing process. Cells were infiltrated with two different precursor solutions—water based or propionic acid based. The saturation limit of the 0.5...journal article 2017
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Chakrabarti, B. (author), Nir, D. (author), Yufit, V (author), Tariq, F (author), Rubio-Garcia, J. (author), Maher, R. (author), Kucernak, A. (author), Aravind, P.V. (author), Brandon, N. (author)Reduced graphene oxide (rGO) suspended in an N,N′-dimethylformamide (DMF) solvent underwent electrophoretic deposition (EPD) on carbon paper (CP) electrodes. X-ray computed micro-tomography (XMT) indicates a 24 % increase in the specific surface area of CP modified with rGO in comparison to the untreated sample. Furthermore, XMT confirms that...journal article 2017
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Thallam Thattai, A. (author), Oldenbroek, V.D.W.M. (author), Schoenmakers, L. (author), Woudstra, T. (author), Aravind, P.V. (author)This article presents a detailed thermodynamic case study based on the Willem-Alexander Centrale (WAC) power plant in the Netherlands towards retrofitting SOFCs in existing IGCC power plants with a focus on near future implementation. Two systems with high percentage (up to 70%) biomass co-gasification (based on previously validated steady...journal article 2017
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Thallam Thattai, A. (author), van Biert, L. (author), Aravind, P.V. (author)Major operating challenges remain to safely operate methane fuelled solid oxide fuel cells due to undesirable temperature gradients across the porous anode and carbon deposition. This article presents an experimental study on methane steam reforming (MSR) global kinetics for single operating SOFCs with Ni-GDC (gadolinium doped ceria) anodes...journal article 2017
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Fernandes, A.A. (author), Woudstra, T. (author), van Wijk, A.J.M. (author), Verhoef, L.A. (author), Aravind, P.V. (author)Delft University of Technology, under its "Green Village" programme, has an initiative to build a power plant (car parking lot) based on the fuel cells used in vehicles for motive power. It is a trigeneration system capable of producing electricity, heat, and hydrogen. It comprises three main zones: a hydrogen production zone, a parking zone,...journal article 2016
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- Thallam Thattai, A. (author), Oldenbroek, V.D.W.M. (author), Schoenmakers, L (author), Woudstra, T. (author), Aravind, P.V. (author) journal article 2016
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Sturm, G.S.J. (author), Navarrete Muñoz, A. (author), Aravind, P.V. (author), Stefanidis, G. (author)Gasification technology may combine waste treatment with energy generation. Conventional gasification processes are bulky and inflexible. By using an external energy source, in the form of microwave-generated plasma, equipment size may be reduced and flexibility as regards to the feed composition may be increased. This type of gasification...journal article 2016
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van Biert, L. (author), Godjevac, M. (author), Visser, K. (author), Aravind, P.V. (author)Progressing limits on pollutant emissions oblige ship owners to reduce the environmental impact of their operations. Fuel cells may provide a suitable solution, since they are fuel efficient while they emit few hazardous compounds. Various choices can be made with regard to the type of fuel cell system and logistic fuel, and it is unclear...journal article 2016
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Thallam Thattai, A. (author), Wittebrood, B.J. (author), Woudstra, T. (author), Geerlings, J.J.C. (author), Aravind, P.V. (author)Flexibility in natural gas combined cycle power plants (NGCC) with pre-combustion CO2 capture could be introduced with co-production of hydrogen and subsequent hydrogen storage with metal hydrides (MH). The current work presents a thermodynamic analysis and comparison between steady state ASPEN Plus models of a reference case NGCC plant with no...journal article 2014
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Shamiri, A. (author), Chakrabarti, M.H. (author), Jahan, S. (author), Hussain, M.A. (author), Kaminsky, W. (author), Aravind, P.V. (author), Yehye, W.A. (author)50 years ago, Karl Ziegler and Giulio Natta were awarded the Nobel Prize for their discovery of the catalytic polymerization of ethylene and propylene using titanium compounds and aluminum-alkyls as co-catalysts. Polyolefins have grown to become one of the biggest of all produced polymers. New metallocene/methylaluminoxane (MAO) catalysts open...journal article 2014
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Patel, H.C. (author), Biradar, N. (author), Venkataraman, V. (author), Aravind, P.V. (author)Ceria and nickel pattern anodes are prepared and tested in order to gain a fundamental insight into the electrochemical oxidation of hydrogen on either of these surfaces. It is found that ceria is highly active towards electrochemical oxidation of hydrogen with lower polarisation resistance because of the mixed ionic electronic conductivity of...journal article 2014
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Patel, H.C. (author), Biradar, N. (author), Venkataraman, V. (author), Aravind, P.V. (author)Pattern anodes can be used to localize reactions and study individual processes like charge transfer, adsorption, diffusion etc. Ceria and Nickel (Ni) pattern anodes were fabricated with the same dimensions with Triple phase boundary (TPB) lengths of 0.2707 m/cm2. Electrochemical Impedance Spectroscopy (EIS) of Ni anodes yielded results...journal article 2013